Tide-water motor.



lllhllT stars PATENT omiten.

JOI-IN HALL, OF CAMBRIDGE, MASSACHUSETTS.

'EIDE-WATER MOTOR.

incasso.

Specification of Letters Patent.

Patented Sept. 12, 1911.

Application tiled January 21, 1909. Serial No. 473,595.

rllidefWater Motor, of which the following,

description, in connection with the accompanying drawings, is aspecification.

This invention relates to tide water motors and has for its object toprovide an improved apparatus of this kind of inexpensive and simpleconstruction.

rlhe invention consists in providing a well connected by a siphon pipewith tide water in which pipe is arranged a motor which is actuatedduring the rising of the tide by water flowing through said pipe intothe well and during the tall of the tide by water flowing` through saidpipe from the well and in combining therewith means for maintaining thelevel of the contents of the well below the level of the tide while thelatter is rising and for maintaining the level of the water in said wellabove the level of the tide while the latter is falling, said meanspreferably consisting of a pair of supplemental wells within reach ofthe tide provided with gates on a level with low water and connectedeach by a siphon pipe, with the well.

|The accompanying drawing is a perspective view, more or lessdiagrammatic, of a tide water motor embodying one form of my invention.

Having reference to the drawings, 7 and 8 are two tanks or docks locatedupon the shore within reach of the tide. The tops ot' the tanks 7 and 8reach to a point about on a level with high water mark and their bottomsare below low water level. These two tanks are connected by siphon pipesl1 and 12 with a well 2 located upon the shore out of reach of the tideand its top is considerably above low water level and preferably on alevel with high water mark or thereabout.

Between the two tanks 7 and 8 and within reach of the tide at low wateris a well l whose top may be upon a level with low water mark. This welll is connected by a pipe or conduit 3 with the well 2, the horizontalpart ot conduit 3 being at or above high water level. water motorrepresented conventionally at 4 while 5 and 6 are valves in conduit 3for controlling motor 4L. The Siphon pipes l1 In the conduit 3 is a.

and l2 are also provided with valves 13 and la by which they arecontrolled. rlhe motor Ll may transmit power to any desired pointthrough any suitable connect-ions.

The tanks 7 and 8 are made with gates or valves 9 and l0, respectively,which control ports provided through the walls of said tanks at aboutlow water level. Also the ends of siphons 1l and l2 within tanks 7 and 8extend well down into the tanks so that said ends are near the bottomsof the tanks.

Normally all of the pipes are full of water and the gate of one tank isopen while the gate of the other tank is closed. Also the period of eachcycle of the operation of the apparatus is the rise and fall of thetide. rlhe operation is as follows: `With the valves of the apparatusproperly adjusted with respect to the movement of the tide, the level ofthe water in wells l and 2 will be the same at low tide, or at least thelevel ci the water in well 2 will be no higher than the level of thewater in well l at that time. lt will therefore be clear that as thetide rises water will How through conduit 3 and motor t into well 2 andthe motor will be actuated. With the gates 9 and l() in their normal`positions as shown in the drawing, tank 8 is empty; the valve 13 is openand the valve 14e closed. Now as the water flows into well 2 fromconduit 3 and tends to raise thelevel of the water in the well 2, waterwill tlow from well 2 through pipe 12 into tank 8 as fast as it flowsinto well 2, or substantially so. @wing to the fact that the tanks 7 and8 are much larger in crosssectional area than well 2 the level of thewater in tank 8 will not rise at a rapid rate or to any great extentduring the time that the tide is rising, or if it does then the valve14- may be adjusted to retard the tlow through pipe l2 so that the levelof the water in well 2 will rise at the same rate and the same relationwill be maintained between the height of the water in well 2 and theheight of the water in tank 8.

During the rising of the tide the gate of the tank 7 is lett open and athigh tide when that tank is full of water said gate is closed. Also, athigh tide, the valve 14 is closed and the valve 13 opened so that thewell 2 is filled from tank 7 to the same level as the level of the waterin tank 7. Consequently as the tide falls water will flow throughconduit 3 and motor 4 from Well 2 which is supplied from tank 7 untillow tide is reached, or until tank 7 is eX- hausted of Water. At loWtide the gate of tank 7 is again opened and left in that position untilneXt high tide While the gate of tank S is opened only long enough toremove the vWater Which entered said tank from Well 2 during the risingof the tide. During each rise and fall of the tide ther operation abovedescribed is repeated.

From the above description it will be seen that during therising of thetide the Siphon pipe 12 and tank 8 serve as means for maintaining thelevel of the Water in Well 2 below the level of the tide Water, and thatduring the fall of the tide the siphon pipe 11 and tank 7 serve as meansfor suppljying` the Well 2 With Water so asto maintain the level of theWater in Well 2 above the level of the tide Water. In lthis Way themotor t is kept in operation both during the rising and the falling ofthe tide.

lWhat I claim is:

1. In an apparatus of the character described, in combination a WellWhose top is higher than 10W Water level; a pipe conn ecting said Wellwith the tide Water; a Water motor in said pipe; means for maintainingthe level of the contents of said Well below the level of the tideduringthe rising of the tide Water so that a current flows through saidpipe into the Well and actuates the motor, and means for automaticallysupplying Water to the Well and maintaining the level of the water insaid Well above tide Water during the fall of the tide so that acurrentflows from said Well through said pipe and actuates the motor as thetide falls.

2. In an apparatus of the character described, in combination, the Well2; pipe 3 connecting` Well 2 With the tide Water; motor 4 in pipe 3;tank 7 arranged Within reach ol the tide; pipe 11 connecting tank 7 withWell 2 and provided with valve 13; tank 8 arranged Within reach of thetide; and the pipe 12 connecting` the tank S with Well 2 and providedWith valve 14.

. JOHN HALL. Witnesses:

HUGH HALL, JAMES W. HALL.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

